Sound Technology

ST-UBA2

Unbalanced to Balanced Amplifier - 2 channel

The ST-UBA2 is used in any application requiring conversion from unbalanced consumer format signals to professional +4 dBu. It may be used to balance audio from CD players, cassette decks, computer sound cards, televisions, and a wide variety of other unbalanced sources. The mono sum output may be used to drive patch-bay jacks, monitors or subwoofer amplifiers.

Separate Dual-LED VU metering is provided for the left and right outputs. A green LED illuminates at 15 dB below +4 dBu. The intensity of the green LED progresses from minimum at -11 dBu to full intensity at +4 dBu. The adjacent red LED illuminates at +4 dBu.

The audio clarity, low-noise, low-distortion and excellent crosstalk performance makes this module ideally suited to a wide variety of demanding audio applications. Use this module in conjunction with other RDL® modules as part of a high quality, flexible audio/video system.

Package TypeCardboard Box
Power RequirementGROUND-REFERENCED, 24 Vdc @ 75 mA
Ambient Operating Environment0° C to 55° C
Headroom> 18 dB above +4 dBu
Crosstalk< -75 dB @ 1 kHz
IMD< 0.004%
Indicators(4)1 green LED per channel indicating 15 dB range below +4 dBu output level output level
Noise< -85 dB (referred to +4 dBu)
Frequency Response20 Hz to 20 kHz (± 0.2 dB)
THD+N< 0.02% (20 Hz to 20 kHz)
Package Dimensions2 x 2 x 4 in.
Gain2 dB to 22 dB (adjustable)
Shipping Weight0.205 lbs.
Outputs (3)+4 dBu balanced (left, right, mono sum)
WEEE weight0.155 lbs.
Tariff code8543.70.9860
Input Impedance10 kΩ
Output Impedance150 Ω
Inputs (2)Unbalanced line-level
Input Signal Range-20 dBV to -10 dBV
  • Convert Stereo IHF Levels to Stereo PRO
  • Additional Summed MONO OUT
  • Independently Adjustable Gain
  • Ground-Referenced Conversion Module
  • Dual-LED VU Metering for Each Channel Included
  • Unparalleled Audio Performance